SE Digest 178

QO™ Miniature Circuit Breakers

QO Plug-On Circuit Breakers

Class 685, 690, 730, 912, 950 / Refer to Catalog: 0730CT9801

www.se.com/us

1 LOAD CENTERS

QO-EPD/EPE Circuit Breakers

QO-EPD/EPE circuit breakers provide overload and short circuit protection combined with Class B ground fault protection. They are designed to provide ground fault protection of equipment at a 30 mA level (EPD) or 100 mA level (EPE). They are not designed to protect people from electrical shock. Table 1.9: QO-EPD Circuit Breakers Ampere Rating [19] 1P 120Vac 10kAIR 1 Space Required 2P Common Trip 120/240 Vac 10kAIR 2 Spaces Required 3P Common Trip 240Vac 10kAIR 3 Spaces Required

QO315EPE [20] QO320EPE [20] QO330EPE [20] QO340EPE [20] QO350EPE [20] —

QO115EPD QO120EPD

QO215EPD QO220EPD QO225EPD QO230EPD QO240EPD QO250EPD

QO315EPD OBS QO320EPD [20] QO330EPD [20] QO340EPD [20] QO350EPD [20] —

15 20 25 30 40 50 60

QO125EPD OBS

QO1P With Shunt Trip

QO130EPD

— — —

QO260EPD [21]

—

—

OBS This product is obsolete.

QO Switch Neutral Common Trip Circuit Breakers (QO-SWN)

Switch Neutral Common Trip 2008 NEC ® 514.11 Table 1.10: QO-SWN Circuit Breakers Ampere Rating [22] 2 Wire 120 Vac 10kAIR 2 Spaces Required

3 Wire 120/240 Vac 10kAIR 3 Spaces Required

QO310SWN

QO210SWN OBS

10 15 20 25 30 40 50

QO215SWN QO220SWN

QO315SWN OBS

QO320SWN QO325SWN

QO225SWN OBS QO230SWN OBS QO240SWN OBS QO250SWN OBS

QO330SWN OBS QO340SWN OBS QO350SWN OBS

Two-wire QO-SWN

Three-wire QO-SWN

OBS This product is obsolete.

QO High Intensity Discharge Circuit Breakers (QO-HID) HID circuit breakers are for use on circuits feeding fluorescent and high intensity discharge (HID) lighting systems such as mercury vapor, metal halide, or high pressure sodium. These circuit breakers are physically interchangeable with QO circuit breakers. Table 1.11: QO-HID Circuit Breakers Ampere Rating [22] 1P 120/240 Vac 10kAIR 1 Space Required 2P Common Trip 120/240 Vac 10kAIR 2 Spaces Required 3P Common Trip 240Vac 10kAIR 3 Spaces Required

QO215HID OBS

QO315HID OBS

QO115HID OBS

15 20 25 30 40 50

QO220HID

QO320HID

—

QO125HID OBS QO130HID OBS QO140HID OBS QO150HID OBS

QO225HID OBS QO230HID OBS QO240HID OBS QO250HID OBS

QO325HID OBS QO330HID OBS

— —

OBS This product is obsolete.

QO Key Operated Circuit Breakers (QO-K)

Key operated QO circuit breakers are available in single-pole construction and can be mounted in any single-pole space which will accept a standard QO circuit breaker. These circuit breakers can be turned ON or OFF or to RESET with a special key (catalog number QOK10) included with the circuit breaker. These circuit breakers are UL Listed

and available as shown in the table. Table 1.12: QO-K Circuit Breakers

120 Vac—10 k AIR (1 Space Required)

Ampere Rating [22]

Ampere Rating [22]

Cat. No.

Cat.No. QO125K

QO110K OBS QO115K OBS QO120K OBS

10 15 20

25 30 —

QO130K OBS

—

OBS This product is obsolete.

QO-K Key Operated

[19] 10–30 A circuit breakers are suitable for use with 60 o Cor 75 o C conductors. 35–60 A circuit breakers are suitable for use with 75 o C conductors. [20] See note in Instruction Bulletin when using in an enclosure with a QO403 or QON prefix. [21] Suitable only for feeding 240 Vac and 208 Vac two-wire loads. Does not contain load neutral connection. [22] 10–30 A circuit breakers are suitable for use with 60oC or 75oC conductors. 35–60 A circuit breakers are suitable for use with 75oC conductors.

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